Reddit:

I was hesitant on updating because I enjoyed my phone being jailbroken but last night I figured I would for the FaceTime updates, but it was the Find My AirPods feature that I really got a benefit out of. I arrive at the airport to head home and come to find out I left my AirPods in the car of my Uber driver, after getting a “Find My” notification.

Presumably, this refers to a “separation alert”, also known as a left behind notification.

I call him up and he brings them back to me. It even tracked him every so often along the way. I didn’t even know that was in the update but it just saved my wallet

I’ve gotten a few of these, especially when I left my AirPods at home on a charger. Some people find the alerts annoying, I like the reminder that they exist.

Here’s Apple’s official separation alert support document, telling you how to turn the alerts off and on, and how to set up a Trusted Location if you want to be able to leave your item somewhere without being notified.